Which activity requires a new pair of gloves between steps?

This question is in the context of food preparation. The correct answer is "the grill cook places raw beef on the grill with his bare hands. Next he assembles the hamburger buns". The cook should have placed new gloves before assembling the hamburger buns as microorganisms from the raw beef may have been transferred to the burger.

light dependent reactions:

release oxygen during the photolysis of wateroccur in the granaproduce atp

light independent reactions:

fix carbon dioxide occur in the stromaproduce glucose

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